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  <title>Returns the name or oid of the tables field</title>

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</div><hr /><div id="function.pg-field-table" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">pg_field_table</h1> 
  <p class="verinfo">(PHP 5 &gt;= 5.2.0)</p><p class="refpurpose"><span class="refname">pg_field_table</span> &mdash; <span class="dc-title">Returns the name or oid of the tables field</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.pg-field-table-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><strong>pg_field_table</strong></span>
    ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result</code></span>
   , <span class="methodparam"><span class="type">int</span> <code class="parameter">$field_number</code></span>
   [, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$oid_only</code><span class="initializer"> = false</span></span>
  ] )</div>

  <p class="para rdfs-comment">
   <span class="function"><strong>pg_field_table()</strong></span> returns the name of the table that field 
   belongs to, or the table&#039;s oid if <em><code class="parameter">oid_only</code></em> is <strong><code>TRUE</code></strong>.
  </p>
 </div>

 
 <div class="refsect1 parameters" id="refsect1-function.pg-field-table-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">result</code></em></dt>

     <dd>

      <p class="para">
       PostgreSQL query result resource, returned by <span class="function"><a href="function.pg-query.html" class="function">pg_query()</a></span>,
       <span class="function"><a href="function.pg-query-params.html" class="function">pg_query_params()</a></span> or <span class="function"><a href="function.pg-execute.html" class="function">pg_execute()</a></span>
       (among others).
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">field_number</code></em></dt>

      <dd>

       <p class="para">
        Field number, starting from 0.
       </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">oid_only</code></em></dt>

      <dd>

       <p class="para">
        By default the tables name that field belongs to is returned but
        if <em><code class="parameter">oid_only</code></em> is set to <strong><code>TRUE</code></strong>, then the
        oid will instead be returned.
       </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.pg-field-table-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   On success either the fields table name or oid. Or, <strong><code>FALSE</code></strong> on failure.
  </p>
 </div>

 
 <div class="refsect1 examples" id="refsect1-function.pg-field-table-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-2037">
    <p><strong>Example #1 Getting table information about a field</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$dbconn&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">pg_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"dbname=publisher"</span><span style="color: #007700">)&nbsp;or&nbsp;die(</span><span style="color: #DD0000">"Could&nbsp;not&nbsp;connect"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$res&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">pg_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$dbconn</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"SELECT&nbsp;bar&nbsp;FROM&nbsp;foo"</span><span style="color: #007700">);<br /><br />echo&nbsp;</span><span style="color: #0000BB">pg_field_table</span><span style="color: #007700">(</span><span style="color: #0000BB">$res</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #0000BB">pg_field_table</span><span style="color: #007700">(</span><span style="color: #0000BB">$res</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$res&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">pg_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$dbconn</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"SELECT&nbsp;version()"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">pg_field_table</span><span style="color: #007700">(</span><span style="color: #0000BB">$res</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
foo
14379580

bool(false)
</pre></div>
    </div>
   </div> 
  </p>
 </div>


 <div class="refsect1 notes" id="refsect1-function.pg-field-table-notes">
  <h3 class="title">注释</h3>
  <blockquote class="note"><p><strong class="note">Note</strong>: 
   <p class="para">
    Returning the oid is much faster than returning the table name because
    fetching the table name requires a query to the database system table.
   </p>
  </p></blockquote>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.pg-field-table-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.pg-field-name.html" class="function" rel="rdfs-seeAlso">pg_field_name()</a> - 返回字段的名字</span></li>
    <li class="member"><span class="function"><a href="function.pg-field-type.html" class="function" rel="rdfs-seeAlso">pg_field_type()</a> - 返回相应字段的类型名称</span></li>
   </ul>
  </p>
 </div>

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